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300 Blackout: A Brief Ancestry & Historical Timeline

Posted by Nic Johnson on

300 Blackout Dimensions 

It’s not often that a round with super and subsonic capabilities is able to break down barriers between military, sporting and hunting communities while injecting itself into the mainstream.

From it’s humble roots as a wildcat round, to it’s development for use within the spec ops community, the 300 Blackout round has been on a steady trajectory upwards into our modern firearm culture.

In this blog post we look back though time to connect the dots though ancestry, events, components, and key individuals that helped birth of a new and popular commercial round used in many rifle platforms today: the 300 Blackout.

1889 - .303 British

303 British

First developed in United Kingdom and used in bolt-action rifles and machine guns, the round is still in use today by many collectors and sportsmen. Historically significant, it was one of the first 30 Caliber rounds used for both military and sporting purposes.


1917 - 8x35 Ribeyrolle Developed

8x35 Ribeyrolle

The 8x35 Ribeyrolle was developed in 1917 during WW1 for the 1918 automatic carbine. The rounds characteristics are undeniably similar to the 300 BLK.


1938 - 7.92×33mm Kurz

7.92x33mm Kurz

Developed in Nazi Germany the round is an intermediate round between the 7.92x57mm rifle cartridge and the 9x19mm Parabellum. One of the first intermediate cartridges designed to bridge the gap between submachine guns and rifles.

1944 – 7.62x39 Produced

7.62x39 produced

First designed for use in the RPD, the round was later used in use for Kalashnikov’s AK-47. The round is infamous for it’s reliability and takedown power.


1949 - AK-47 fully integrated into Soviet Armed Forces.


Known for it’s reliability and rugged design, Mikhail Kalashnikov (B. 1919) begun design in 1946, strongly influenced by the M1 Garand. (Chambered in the 30 caliber) Still in use today in on over 100 country’s, the rifle has proven it’s effectiveness for nearly 70 years.


1950 - .222 Rem Introduced

.222 Rem

The first commercially manufactured rimless .22 cartridge popular with sporting shooters. The round would later be used to develop the .222 Rem Magnum, which would be the starting point for development of the .223 Rem and 5.56x45 NATO Round.


1952 - .308 Winchester

.308 Win

One of the most popular short-action, big-game hunting cartridge worldwide. The 30 caliber cartridge would later be used to create the7.62x51 NATO in 1954.


1956 - AR-15 Designed by Eugene Stoner

Eugene Stoner

After designing the AR-10 (Chambered in 7.62x51 NATO) for ArmaLite, Eugene Stoner (b. 1922) develops the AR-15 chambered in .222 Rem Magnum. (1958) The AR platform would soon become one of the most popular weapon systems for both military and civilian use in the mid 2000’s.


1963 - .221 Fireball Introduced

.221 Fireball

The Experimental round developed by Remington to be used in their single shot bolt-action pistol, the XP-100. One of the first “wildcatter” rounds to use the .222 parent case.


1963 - 5.56x45 NATO Enters US Service

5.56 Nato

Derived from the .223, the 5.56x45 NATO is developed for use in the M16, the case in which the 300 Blackout round is derived.


1966 - M16 set for US Military 

Rifleman points M16 during a firefight in Vietnam

Although the rifle had a rocky start after being deployed in Vietnam, the AR platform has since been become one of the most popular rifle platforms in the world.

PC: Small Arms Of The Vietnam War: A Photographic Studyby Dale A. Dye and Tom Laemlein.


1969 - 7.62x28mm introduced


Developed for use in Colt IMP/GUU4P the round holds similar characteristics to 300 BLK round.


1977 - J. D. Jones founds SSK Industries

J.D. Jones founder of SSK Industries

J.D. Jones (b. 1936) starts the design and manufacturing company SSK developing specialty ammunition and firearms. The Company would later develop the 300 Whisper.


1990's (Early) - J. D. Jones Develops the 300 Whisper

300 Whisper

J.D. Jones creates the multi-purposed cartridge the 300 Whisper that is capable of using bullets for both super sonic and subsonic velocities. The round would later use the design as a starting point to develop the 300 AAC BLK.


1994 - Federal Assault Weapons Ban

US Congress bans manufacture and civilian use to firearms defined as “assault weapons” and high capacity magazines.



1994 – AAC (Advanced Armament Corporation) founded. 

AAC Logo

 Kevin Brittingham starts AAC to manufacture suppressors.


2004 - Federal Assault Weapons Ban Lifted

Rifles in a gun store

The US Congress ban expires. US citizens are now allowed to purchase AR-15’s and similar rifles establishing the platform into position to become "America's Rifle."

2009: AAC is acquired by Remington

Military customer approaches Robert Silvers, Director of Research & Development at AAC, to develop what becomes 300 AAC Blackout. Robert and Kevin Brittingham work with Remington to commercialize round. Remington submits results to SAAMI for standardization.

2011 (JAN) – 300 AAC Blackout approved by SAAMI

The 300 BLK round was set into motion be produced by over 100 ammunition manufacturers in both supersonic and subsonic capabilities for use in military and civilian applications. The round has since gained popularity for hunting of wild game.

Today there are over 100 manufacturers of the 300 blackout round, FOG AMMO is proud to be one! We back our ammo with our guarantee and dedication to provide the highest quality product available to the market.


Special Thanks to Robert Silvers and the community for their contribution and consultation to the creation of this timeline. 

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